Kia Optima: Battery replacement
Type A

Type B
A battery should last for several years, but if the transmitter or smart key is not working properly, try replacing the battery with a new one. If you are unsure how to use or replace the battery, contact an authorized Kia dealer.
1. Pry open the transmitter or smart key center cover.
2. Replace the battery
with a new battery (CR2032). When replacing the battery, make sure the battery positive
“+” symbol faces up as indicated in the illustration.
3. Install the battery in
the reverse order of removal.
CAUTION
Precautions
Theft-alarm systemRemoval
1.
Remove the front wheel & tire.
Tightening torque:88.3
~ 107.9 N.m (9.0 ~ 11.0 kgf.m, 65.1 ~ 79.6 lb-ft)
2.
Loosen the hose eyebolt ( ...
Manual heating and air conditioning
The heating and cooling system can be controlled manually by pushing buttons
other than the AUTO button. In this case, the system works sequentially according
to the order of buttons selected.
1. ...
Components Operations
PCM (Power Train Control Module)
1.
The PCM(ECM) (A) carries out
a check of the ignition key using a special encryption algorithm, which
is programmed into the transponder as well as ...